211420220434 has 8 divisors (see below), whose sum is σ = 317132293248. Its totient is φ = 105709456020.

The previous prime is 211420220413. The next prime is 211420220443. The reversal of 211420220434 is 434022024112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×211420220434² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211420220399 and 211420220408.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 401079 + ... + 764005.

It is an arithmetic number, because the mean of its divisors is an integer number (39641536656).

Almost surely, 2^211420220434 is an apocalyptic number.

211420220434 is a deficient number, since it is larger than the sum of its proper divisors (105712072814).

211420220434 is a wasteful number, since it uses less digits than its factorization.

211420220434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654200.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 211420220434 its reverse (434022024112), we get a palindrome (645442244546).

The spelling of 211420220434 in words is "two hundred eleven billion, four hundred twenty million, two hundred twenty thousand, four hundred thirty-four".